Swift height of content of table view

Question

Is there a way to find out the height of the content of a table view, beside adding up the height of all cells from all sections?

I have 3 sections each with different height cells and variable number of cells. So I am hoping for a system method to get the height of the content of the table view.

EDIT: nowhere in the answer of the other similar question does it say where to call the tableView.contentSize

Answer 1

You can retreive the content size by :

Swift / ObjC :

let contentSize : CGSize = self.tableView.contentSize
let width = self.tableView.contentSize.width
let height = self.tableView.contentSize.height

You can use this to know if your UITableView is loaded (Swift 2.2):

override func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {
    if indexPath.row == (tableView.indexPathsForVisibleRows!.last! as! NSIndexPath).row {
        // End of loading
        let contentSize : CGSize = self.tableView.contentSize
        let width = self.tableView.contentSize.width
        let height = self.tableView.contentSize.height
    }
}